<!DOCTYPE html>
<html lang="en">

<head>

  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
  <meta name="description" content="">
  <meta name="author" content="">

  <title>SB Admin 2 - Login</title>

  <!-- Custom fonts for this template-->
  <link href="vendor/fontawesome-free/css/all.min.css" rel="stylesheet" type="text/css">
  <link href="https://fonts.googleapis.com/css?family=Nunito:200,200i,300,300i,400,400i,600,600i,700,700i,800,800i,900,900i" rel="stylesheet">

  <!-- Custom styles for this template-->
  <link href="css/sb-admin-2.min.css" rel="stylesheet">

</head>

<body class="bg-gradient-primary">

  <div class="container">
    <!-- Outer Row -->
    <div class="row justify-content-center">

      <div class="col-xl-10 col-lg-12 col-md-9">
        <div class="card o-hidden border-0 shadow-lg my-5">
          <div class="card-body p-0">
            <!-- Nested Row within Card Body -->
            <div class="row">
              <div class="col-lg-6 d-none d-lg-block bg-login-image"></div>
              <div class="col-lg-6">
                <div class="p-5">
                  <div class="text-center">
                    <h1 class="h4 text-gray-900 mb-4">Welcome Back!</h1>
                  </div>
                  <form class="user">
                    <div class="form-group">
                      <!-- email输入框 -->
                      <input type="email" class="form-control form-control-user" id="inputEmail" aria-describedby="emailHelp" placeholder="Enter Email Address...">
                    </div>
                    <div class="form-group">
                      <!-- passworld输入框 -->
                      <input type="password" class="form-control form-control-user" id="inputPassword" placeholder="Password">
                    </div>
                    <div class="form-group">
                      <div class="custom-control custom-checkbox small">
                        <input type="checkbox" class="custom-control-input" id="customCheck">
                        <label class="custom-control-label" for="customCheck">Remember Me</label>
                      </div>
                    </div>
                    <a href="index.html" id="loginbtn" class="btn btn-primary btn-user btn-block">
                      Login
                    </a>
                  </form>
           
                  <div class="text-center">
                    <a class="small" href="register.html">Create an Account!</a>
                  </div>
                </div>
              </div>
            </div>
          </div>
        </div>

      </div>

    </div>

  </div>
  <script src="./js/utils.js"></script>
  <script>
    // 点击按钮准备发送数据 : 用户名 ， 密码;
    // 发送一个 http 请求 ; 
    // xhr , fetch  √; 

    // 1. 去掉登陆按钮的默认事件;
    $("#loginbtn").onclick = async function(evt){
       let e = evt || event;
       e.preventDefault();
       // 获取元素的数据;
       let email_value = $("#inputEmail").value;
       let password_value = $("#inputPassword").value;
      //  console.log(email_value,password_value);
      // 发送POST请求接受后端响应
       let response = await fetch("../server/login.php",{
         method : "POST",
         body : formate({
           email : email_value,
           password : password_value
         }),
         headers : {
           "Content-Type" : "application/x-www-form-urlencoded"
         } 
       })
       let data = await response.json();
       // 如果 type 为 success 那么我们跳转到主页;
       // 如果 type 为 error  我们应该给予提示;
       if(data.type === "success"){
         // 把数据放在cookie之中;
        document.cookie = "email="+email_value;
        location.href = "index.html";
       }else{
        alert("登录失败，请重试");
       }
    }


  </script> 
</body>

</html>
